Company Filing History:

10 out of 8,679

Seagate Technology Incorporated

Western Automation Laboratories, Inc.

patents

Years Active: 1996-2005

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6937428 - Reducing actuator arm oscillation during settle mode in a disc drive servo system (2005-08-30),

2. 6892213 - Digital sine/cosine wave generator (2005-05-10),

3. 6867943 - Efficient feedforward compensation for repeatable runout in a disc drive (2005-03-15),

4. 6819521 - Repeated runout position error compensation in a disc drive servo system (2004-11-16),

5. 6674601 - Method and apparatus for electronically shifting mechanical resonance of an actuator system of a disc drive (2004-01-06),

6. 6654197 - Disc drive dynamics identification using synchronous excitation signal (2003-11-25),

7. 6636376 - Disc drive resonance disturbance cancellation filter (2003-10-21),

8. 6628472 - Method and apparatus for feedforward cancellation using a phase lock loop (2003-09-30),

9. 6618219 - Method and apparatus for feedforward cancellation using a peak detector (2003-09-09),

10. 6541931 - Dual stage positioning system using a shared voltage source (2003-04-01),

11. 6292324 - Disk drive with compensation values calculated using a non-causal impulse response (2001-09-18),

12. 6115203 - Efficient drive-level estimation of written-in servo position error (2000-09-05),

13. 6018430 - Disk drive with multiple disk surfaces having improved allocation of (2000-01-25),

14. 5936790 - Servo sector allocation for high sampling rate (1999-08-10),

15. 5682276 - Data cartridge library system architecture (1997-10-28),

Innovative Contributions of Inventor Hai Thanh Ho

Introduction

Hai Thanh Ho, an accomplished inventor based in Westminster, Colorado, has an impressive portfolio of 17 patents to his name. His work primarily focuses on enhancing technologies within data handling systems, showcasing a deep understanding of mechanical engineering and servo systems.

Latest Patents

Among his latest innovations is the patent titled "Reducing actuator arm oscillation during settle mode in a disc drive servo system." This groundbreaking invention offers an apparatus and method for compensating actuator arm oscillation, which is induced by resonance mode excitation. The invention is particularly pertinent for disc drive data handling systems, where a servo loop controls the position of an actuator arm that supports a recording head. By identifying the frequency of oscillation and generating a position error signal (PES), the system effectively mitigates oscillation during the head's settlement onto a destination track.

Another notable patent from Hai Thanh Ho is the "Digital sine/cosine wave generator." This device generates discrete values that represent either a sine wave or a cosine wave, utilizing a difference equation to produce the desired waveforms. The frequency selection is cleverly achieved through initial conditions drawn from values created by a coefficient generator, underscoring the innovative methodology behind this technology.

Career Highlights

Throughout his career, Hai Thanh Ho has held prominent roles at leading technology firms, including Seagate Technology and Maxtor Corporation. His work at these establishments has not only shaped his expertise but has also contributed significantly to advancements in data storage technologies.

Collaborations

During his journey, Hai Thanh Ho collaborated with several proficient individuals, including Toan Q Doan and Bennett C Hinnen. These partnerships have allowed for the exchange of innovative ideas and have fostered a collaborative environment that emphasizes the progression of technology.

Conclusion

In summary, Hai Thanh Ho's contributions to the field of inventions, particularly in data handling systems, are remarkable. With a total of 17 patents, his innovations reflect a commitment to improving technology and a keen insight into the challenges faced in the industry. His work continues to impact the field, paving the way for future advancements.

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